Secondary crushing chamber for crusher
By designing the matching structure between the material stop end plate and the receiving groove in the secondary crushing chamber of the crusher, the problem of material leakage at the joints of the fixed tool holder and the crushing chamber is solved, and the crushing effect of the crusher is improved.
Patent Information
- Application Number
- CN202421857947.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-01
AI Technical Summary
Due to design reasons, the secondary crushing chamber of the existing crusher has caused serious material leakage at the joints between the fixed tool holder and the inner wall of the crushing chamber, which affects the crushing effect.
A secondary crushing chamber for a crusher is designed, adopting a fixed tool holder and a fixed blade structure, and a material stop end plate is provided at both ends of the fixed tool holder. A matching surface is formed on the material stop end plate and abuts with the receiving groove of the inner wall of the crushing chamber, thereby sealing the gap between the fixed tool holder and the inner wall of the crushing chamber.
It effectively prevents the material from leaking from the gap between the fixed tool holder and the inner wall of the crushing chamber, improves the crushing effect of the crusher, and ensures the uniform particle size of the finished product.
Smart Images
Figure CN222998862U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of crushers, and in particular to a secondary crushing chamber for a crusher. Background Art
[0002] The crushing chamber of an existing crusher generally consists of a machine body, a screen, and a secondary crushing chamber. An inlet is provided at the top of the crushing chamber, a rotating shaft is provided at the center of the crushing chamber, and a moving hammer blade is connected to the rotating shaft and can drive the moving hammer blade to rotate at a high speed to strike materials; the secondary crushing chamber includes a fixed knife seat and fixed knife blades. The fixed knife seat is arranged below the rotating shaft along the axial direction of the rotating shaft, and both ends of the fixed knife seat are detachably connected to the inner wall of the crushing chamber; the fixed knife blades are arranged in a row on the top of the fixed knife seat along the axial direction of the rotating shaft; discharge ports communicating with the crushing chamber are provided on both sides of the fixed knife seat, and a screen is plugged in each discharge port.
[0003] After the materials to be crushed are poured into the crushing chamber from the inlet, these materials will first be struck by the moving hammer blade and broken, and then rotate around the rotating shaft together with the moving hammer blade and form an annular flow layer in the crushing chamber. When the circulating flow layer passes between the secondary crushing chamber and the drive shaft, the materials in the circulating flow layer will collide with the fixed knife blades and be crushed for the second time.
[0004] However, since the length of the existing fixed knife seat is set to be slightly less than the length of the crushing chamber for the convenience of disassembly and assembly, the materials in the crushing chamber will continuously leak out from the gap between the fixed knife seat and the inner wall of the crushing chamber. When the particles of the materials are smaller, the material leakage phenomenon is more serious, thus affecting the normal crushing effect of the crusher.
[0005] In view of this, a secondary crushing chamber for a crusher is needed. Utility Model Content
[0006] In order to solve the problem that the material leakage phenomenon at the joint between the existing secondary crushing chamber and the inner wall of the crushing chamber is serious during use, the present application provides a secondary crushing chamber for a crusher.
[0007] The present application provides a secondary crushing chamber for a crusher, adopting the following technical solution: including a fixed knife seat and fixed knife blades, baffle end plates are provided at both ends of the fixed knife seat, a mating surface is formed on the side edge of the baffle end plate facing the moving hammer blade, a receiving groove adapted to the baffle end plate is opened on the inner wall of the crushing chamber, and the baffle end plate can be inserted into the receiving groove and the mating surface abuts against the groove wall of the receiving groove;
[0008] The fixed knife blades are arranged on the fixed knife seat.
[0009] By adopting the above technical solution, since the fixed knife seat is designed for convenient disassembly and installation, its length is slightly shorter than that of the crushing chamber, so that there is a gap between the end of the fixed knife seat and the inner wall of the crushing chamber. The mating surface on the material baffle end plate can abut against the groove wall of the receiving groove and block the gap between the end of the fixed knife seat and the inner wall of the crushing chamber, so that the material in the crushing chamber is not likely to leak out from this gap. As a result, when the crusher is in operation, it is not easy for the situation to occur where the material leaks out from the gap between the end of the fixed knife seat and the inner wall of the crushing chamber before being crushed to a size that can pass through the mesh holes of the screen, resulting in a large number of coarse particles in the finished product after being crushed by the crusher. Thus, the crusher can fully crush the material.
[0010] Specifically, the abutting portion between the mating surface and the groove wall of the receiving groove is a material leakage slit, and the distance from this material leakage slit to the rotating shaft is less than the distance from the end of the moving hammer blade to the rotating shaft.
[0011] By adopting the above technical solution, since the moving hammer blade will continuously carry away the raw materials it contacts when the rotating shaft drives the moving hammer blade to rotate, the setting of the material leakage slit makes it difficult for the material to accumulate at the joint between the groove wall of the installation groove and the mating surface. Therefore, it is more difficult for the raw materials to leak out of the crushing chamber from this joint, ensuring that the crusher can fully crush the material.
[0012] Furthermore, baffle wings are provided on both sides of the fixed knife seat, and the side plate surface of the baffle wing facing away from the crushing chamber can abut against the screen.
[0013] By adopting the above technical solution, the baffle wings can block the gap between the fixed knife seat and the screen, so that the material in the crushing chamber is not likely to leak out of the crushing chamber from this gap, thus ensuring that the crusher can fully crush the material.
[0014] Furthermore, a baffle protrusion is provided on the groove wall of the receiving groove facing the mating surface, and the side plate surface of the material baffle end plate facing the moving hammer blade can abut against the baffle protrusion.
[0015] By adopting the above technical solution, the baffle protrusion can abut against the side plate surface of the material baffle end plate facing the moving hammer blade and block the material leakage slit formed between the mating surface and the inner wall of the crushing chamber, so that the material in the crushing chamber is not likely to enter the material leakage slit, thus ensuring that the crusher can fully crush the material.
[0016] Furthermore, an elastic baffle member is provided on the side plate surface of the material baffle end plate facing the moving hammer blade, and a relief groove adapted to the elastic baffle member is formed on the baffle protrusion. When the material baffle end plate abuts against the baffle protrusion, the elastic baffle member can extend into the relief groove.
[0017] By adopting the above technical solution, the elastic material blocking member can extend into the relief groove and block the gap between the material blocking protrusion and the side plate surface of the material blocking end plate facing the moving hammer piece, so as to block the material entering this gap, thereby ensuring that the crusher can fully crush the material.
[0018] Optionally, a frosted surface is provided on the side plate surface of the material blocking end plate facing away from the moving hammer piece.
[0019] By adopting the above technical solution, due to the setting of the frosted surface, the friction force between the material powder and the material blocking end plate can be increased, so that the material powder will be stuck in the gap between the material blocking end plate and the inner wall of the crushing chamber after entering the gap, thereby further reducing the possibility of material leakage from this gap.
[0020] Furthermore, a connecting ear is provided at the bottom of the fixed knife seat, and an elastic pad is provided on the connecting ear, and this elastic pad can be in contact with the inner wall of the crushing chamber.
[0021] By adopting the above technical solution, the fixed knife seat can be connected to the inner wall of the crushing chamber through the cooperation of bolts, nuts and the connecting ear.
[0022] Specifically, an installation groove is formed on the fixed knife seat, and a fixing hole is formed on the bottom wall of the installation groove;
[0023] The fixed knife blade includes a plurality of knife heads and a knife body. The plurality of knife heads are arranged at intervals on the knife body. A connecting hole corresponding to the fixing hole is formed on the knife body, and the knife body can be inserted into the installation groove and sequentially passed through the connecting hole and the fixing hole by a bolt and screwed with a nut to be connected to the fixed knife seat.
[0024] By adopting the above technical solution, the knife body of the fixed knife blade can be first inserted into the installation groove and then sequentially passed through the connecting hole and the fixing hole by a bolt and screwed with a nut, so as to fix the fixed knife blade on the fixed knife seat.
[0025] In summary, the present application includes the following beneficial technical effects:
[0026] It includes a fixed knife seat and fixed knife blades. There are material blocking end plates at both ends of the fixed knife seat. A mating surface is formed on the side edge of the material blocking end plate facing the moving hammer pieces. A receiving groove adapted to the material blocking end plate is provided on the inner wall of the crushing chamber. The material blocking end plate can be inserted into the receiving groove and the mating surface abuts against the groove wall of the receiving groove. The fixed knife blades are arranged on the fixed knife seat. Since the fixed knife seat is designed for easy disassembly and assembly, its length is slightly less than the length of the crushing chamber, so that there is a gap between the end of the fixed knife seat and the inner wall of the crushing chamber. The mating surface on the material blocking end plate can abut against the groove wall of the receiving groove and block the gap between the end of the fixed knife seat and the inner wall of the crushing chamber, so that the material in the crushing chamber is not easily leaked from this gap. As a result, when the crusher is working, it is not easy to occur that the material leaks from the gap between the end of the fixed knife seat and the inner wall of the crushing chamber before being crushed to a size that can pass through the mesh holes of the sieve, resulting in a large number of coarse particles in the finished product crushed by the crusher. Thus, the crusher can fully crush the material. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 is a perspective view of a secondary crushing chamber for a crusher according to the present application;
[0028] Figure 2 is a schematic cross-sectional view taken along the central axis of the connection hole of a secondary crushing chamber for a crusher according to the present application, where only a part of the rotating shaft and a part of the sieve are shown;
[0029] Figure 3 is a schematic cross-sectional view taken along the central axis of the connection hole of another embodiment of the present application, where only a part of the rotating shaft and a part of the sieve are shown;
[0030] Figure 4 is along Figure 3 the schematic cross-sectional view taken along the A-A direction in
[0031] Reference numerals: 1, sieve; 2, rotating shaft; 3, moving hammer piece; 4, fixed knife seat; 41, material blocking end plate; 411, mating surface; 412, elastic material blocking member; 42, material blocking wing plate; 43, connecting ear; 431, elastic pad; 5, fixed knife blade; 51, knife head; 52, knife body; 521, connection hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0032] Figure 1 is a perspective view of a secondary crushing chamber for a crusher according to the present application, Figure 2 is a schematic cross-sectional view taken along the central axis of the connection hole of a secondary crushing chamber for a crusher according to the present application, where only a part of the rotating shaft and a part of the sieve are shown. Refer to Figure 1 and Figure 2, a secondary crushing chamber for a crusher provided by the present application is used to be installed in the crushing cavity of the crusher. A screen 1, a rotating shaft 2, and moving hammer blades 3 provided on the rotating shaft 2 are also arranged in the crushing cavity. The secondary crushing chamber for the crusher includes: a fixed knife seat 4 and fixed knife blades 5. Both ends of the fixed knife seat 4 are provided with material blocking end plates 41. A mating surface 411 is formed on the side plate edge of the material blocking end plate 41 facing the moving hammer blade 3. A receiving groove adapted to the material blocking end plate 41 is opened on the inner wall of the crushing cavity. The material blocking end plate 41 can be inserted into the receiving groove and the mating surface 411 abuts against the groove wall of the receiving groove. The fixed knife blade 5 is arranged on the fixed knife seat 4.
[0033] Through the above design, since the fixed knife seat 4 is designed for easy disassembly and installation, its length is slightly less than the length of the crushing cavity, so that there is a gap between the end of the fixed knife seat 4 and the inner wall of the crushing cavity. The mating surface 411 on the material blocking end plate 41 can abut against the groove wall of the receiving groove and block the gap between the end of the fixed knife seat 4 and the inner wall of the crushing cavity, so that the material in the crushing cavity is not easily leaked from this gap, thereby preventing the situation that when the crusher is processing, the material leaks from the gap between the end of the fixed knife seat 4 and the inner wall of the crushing cavity before being crushed to a size that can pass through the mesh holes of the screen 1, resulting in a large number of coarse particles in the finished product after being crushed by the crusher, so that the crusher can fully crush the material.
[0034] Specifically, the abutting part of the mating surface 411 and the groove wall of the receiving groove is a material leakage seam. The distance from the material leakage seam to the rotating shaft 2 can be set to be less than the distance from the end of the moving hammer blade 3 to the rotating shaft 2. Through the above design, since the moving hammer blade 3 will continuously carry away the raw materials it contacts when the rotating shaft 2 drives the moving hammer blade 3 to rotate, the setting of the material leakage seam makes it difficult for the material to accumulate at the joint between the groove wall of the installation groove and the mating surface 411, so that the raw material is less likely to leak from this joint to the crushing chamber, ensuring that the crusher can fully crush the material; the side plate surface of the material blocking end plate 41 facing away from the moving hammer blade 3 can be set as a frosted surface. Since the setting of the frosted surface can increase the friction between the material powder and the material blocking end plate 41, so that the material powder will be stuck in the gap between the material blocking end plate 41 and the inner wall of the crushing cavity after entering the gap, thereby further reducing the possibility of material leakage from this gap.
[0035] See Figure 1 and Figure 2 , material blocking wing plates 42 are arranged on both sides of the fixed knife seat 4. The side plate surface of the material blocking wing plate 42 facing away from the crushing cavity can abut against the screen 1, so as to block the gap between the fixed knife seat 4 and the screen 1 through the material blocking wing plate 42, so that the material in the crushing chamber is not easily leaked from this gap to the outside of the crushing chamber, thereby ensuring that the crusher can fully crush the material.
[0036] Figure 3FIG. 0 is a schematic cross-sectional view taken along the central axis of the connection hole of another embodiment of the present application, only showing a part of the rotating shaft and a part of the screen. Figure 4 is a schematic cross-sectional view taken along Figure 3 the direction A-A in FIG. See Figure 3 and Figure 4 In another embodiment provided by the present application, a material blocking protrusion is provided on the groove wall of the accommodating groove facing the mating surface 411. The side plate surface of the material blocking end plate 41 facing the moving hammer piece 3 can abut against the material blocking protrusion, so as to be able to block the leakage gap formed between the mating surface 411 and the inner wall of the crushing chamber by the abutment of the material blocking protrusion and the side plate surface of the material blocking end plate 41 facing the moving hammer piece 3, so that the material in the crushing chamber is not easily introduced into the leakage gap; an elastic material blocking member 412 is provided on the side plate surface of the material blocking end plate 41 facing the moving hammer piece 3, and a relief groove adapted to the elastic material blocking member 412 is provided on the material blocking protrusion. The elastic material blocking member 412 can be a rubber strip. When the material blocking end plate 41 abuts against the material blocking protrusion, the elastic material blocking member 412 can extend into the relief groove and block the gap between the material blocking protrusion and the side plate surface of the material blocking end plate 41 facing the moving hammer piece 3, so as to be able to block the material entering the gap, thereby ensuring that the crusher can fully crush the material.
[0037] See Figure 3 and Figure 4 The bottom of the fixed knife seat 4 is provided with a connecting ear 43, and an elastic pad 431 is provided on the connecting ear 43. The elastic pad 431 can abut against the inner wall of the crushing cavity, so that the fixed knife seat 4 can be connected to the inner wall of the crushing cavity through the cooperation of bolts, nuts and the connecting ear 43; an installation groove is provided on the fixed knife seat 4, and a fixing hole is provided on the bottom wall of the installation groove. The fixed knife 5 includes a plurality of knife heads 51 and a knife body 52. The plurality of knife heads 51 are arranged at intervals on the knife body 52. A connecting hole 521 corresponding to the fixing hole is provided on the knife body 52, so that the knife body 52 of the fixed knife 5 can be first inserted into the installation groove and then sequentially passed through the connecting hole 521 and the fixing hole by a bolt and screwed with a nut, so as to be able to fix the fixed knife 5 on the fixed knife seat 4.
[0038] The working principle of a secondary crushing chamber for a crusher of the present application during use is as follows:
[0039] It includes a fixed knife seat 4 and fixed knife blades 5. Both ends of the fixed knife seat 4 are provided with material blocking end plates 41. On the side edge of the material blocking end plate 41 facing the moving hammer pieces 3, a mating surface 411 is formed. On the inner wall of the crushing chamber, a receiving groove adapted to the material blocking end plate 41 is provided. The material blocking end plate 41 can be inserted into the receiving groove and the mating surface 411 abuts against the groove wall of the receiving groove. The fixed knife blades 5 are arranged on the fixed knife seat 4. Since the fixed knife seat 4 is designed for convenient disassembly and assembly, its length is slightly smaller than the length of the crushing chamber, so that there is a gap between the end of the fixed knife seat 4 and the inner wall of the crushing chamber. The mating surface 411 on the material blocking end plate 41 can abut against the groove wall of the receiving groove and block the gap between the end of the fixed knife seat 4 and the inner wall of the crushing chamber, so that the material in the crushing chamber is not easily leaked from this gap. Thus, when the crusher is working, it is not easy to occur that the material leaks from the gap between the end of the fixed knife seat 4 and the inner wall of the crushing chamber before being crushed to a size that can pass through the mesh holes of the screen 1, resulting in a large number of coarse grains in the finished product after being crushed by the crusher, so that the crusher can fully crush the material.
[0040] It should be noted that the above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A secondary crushing chamber for a pulverizer, which is used to be installed in a crushing chamber of the pulverizer, wherein a screen (1), a rotating shaft (2) and a movable hammer (3) arranged on the rotating shaft (2) are also arranged in the crushing chamber, characterized in that: It comprises a fixed blade seat (4) and a fixed blade (5), wherein both ends of the fixed blade seat (4) are provided with a material blocking end plate (41), a mating surface (411) is formed on a side plate edge of the material blocking end plate (41) facing the movable hammer plate (3), and an accommodating groove matched with the material blocking end plate (41) is formed on the inner wall of the crushing chamber, and the material blocking end plate (41) can be inserted into the accommodating groove so that the mating surface (411) abuts against the groove wall of the accommodating groove; The fixed blade (5) is arranged on the fixed blade seat (4).
2. A secondary crushing chamber for a crusher according to claim 1, characterized in that: The abutment point between the matching surface (411) and the groove wall of the accommodating groove forms a material leakage gap, and the distance from the material leakage gap to the rotating shaft (2) is smaller than the distance from the end of the movable hammer piece (3) to the rotating shaft (2).
3. A secondary crushing chamber for a crusher according to claim 2, characterized in that: Material blocking wing plates (42) are provided on both sides of the fixed blade seat (4), and a plate surface on one side of the material blocking wing plates (42) facing away from the pulverizing chamber can abut against the screen (1).
4. A secondary crushing chamber for a crusher according to claim 2, characterized in that: A material-blocking protrusion is provided on the groove wall of the accommodating groove facing the matching surface (411), and a side plate surface of the material-blocking end plate (41) facing the movable hammer piece (3) can abut against the material-blocking protrusion.
5. A secondary crushing chamber for a crusher according to claim 4, characterized in that: An elastic material blocking member (412) is provided on a side plate surface of the material blocking end plate (41) facing the movable hammer piece (3), and a clearance groove matched with the elastic material blocking member (412) is provided on the material blocking protrusion. When the material blocking end plate (41) abuts against the material blocking protrusion, the elastic material blocking member (412) can extend into the clearance groove.
6. A secondary crushing chamber for a crusher according to any one of claims 1 to 5, characterized in that: A frosted surface is provided on a plate surface on one side of the material blocking end plate (41) facing away from the movable hammer piece (3).
7. A secondary crushing chamber for a crusher according to claim 6, characterized in that: A connecting ear (43) is provided at the bottom of the fixed blade seat (4), and an elastic pad (431) is provided on the connecting ear (43), and the elastic pad (431) can abut against the inner wall of the crushing chamber.
8. The secondary crushing chamber for a crusher according to claim 1, characterized in that: The fixed knife seat (4) is provided with a mounting groove, and the bottom wall of the mounting groove is provided with a fixing hole; The fixed blade (5) comprises a plurality of blade heads (51) and a blade body (52), wherein the plurality of blade heads (51) are arranged at intervals on the blade body (52), and the blade body (52) is provided with a connecting hole (521) corresponding to the fixing hole, and the blade body (52) can be inserted into the mounting groove and connected to the fixed blade seat (4) by bolts passing through the connecting hole (521) and the fixing hole in sequence and being screwed with a nut.